Hacktastic HTML DSL

html.rb

# Only working example so far HTML.new { html { title { "Hello" } } }
# Soon attributes will be working.

class HTML
  def initialize &content
    @html = ""
    instance_eval &content
  end

  def method_missing tag, *attrs, &content
    @html << tag_with_attributes(tag, attrs.first || {})
    @html << instance_eval(&content) if content
    @html << %|</#{tag}>|
  end

  def tag_with_attributes tag, attrs=Hash.new
    %|<#{tag}| <<
     ((attrs.empty? and '') or (' ' <<
      attrs.map{|attr, val| %|#{attr}="#{val}"|} * ' ')) << '>'
  end
end